Baseline patient and VBDA imaging characteristics
| Factors | Different Groups | ||
|---|---|---|---|
| LPBS (n = 25) | FD (n = 22) | P Value | |
| Patient characteristics | |||
| Age (mean) (yr) | 58.6 (SD, 10.2) | 59.4 (SD, 8.7) | .445 |
| Sex (male) | 21 (84%) | 17 (77.3%) | .654 |
| Medical history | |||
| Hypertension | 23 (92%) | 19 (86.4%) | .532 |
| Diabetes | 4 (16%) | 1 (18.2%) | .204 |
| Smoking | 10 (40%) | 8 (36.4%) | .798 |
| Preoperative mRS score | |||
| 0 | 4 (16%) | 5 (22.7%) | .582 |
| 1 | 10 (40%) | 5 (22.7%) | |
| 2 | 8 (32%) | 9 (40.9%) | |
| 3 | 3 (12%) | 2 (9.1%) | |
| 4 | 0 | 1 (4.6%) | |
| 5 | 0 | 0 | |
| VBDA imaging characteristic | |||
| Length of VBDA (mean) (mm) | 33.6 (SD, 11.9) | 38.4 (SD, 13.8) | .551 |
| Diameter of VBDA (mean) (mm) | 15.2 (SD, 5.1) | 15.4 (SD, 5.2) | .924 |
| Brainstem compression resulting from VBDA | 13 (52%) | 13 (59.1%) | .626 |
| Cerebral infarction around VBDA territory | 7 (28%) | 9 (40.9%) | .351 |